Rigid wrench



Aug. 18, 1925.

-J. JIROY RIGID WRENCH Filed Dec. 12, 1922 '4 A 3 a w a 6 .w a w. 5 v nuw 1/ VENTOR.

Joseph ivp z? i ATTORNEY Patented Aug. 18, 1925.

UNITED STATES PATENT OFFICE.

JOSEPH JIROY, F PASADENA, CALIFORNIA.

RIGID WRENCH.

To all whom it may concern Be it known that I, J osnrrr Juror, a citizenof the United States, residing at Pasadena, in the county of Los Angelesand State of California, have invented a new and useful Rigid rench, ofwhich the following is a specification.

This invention relates to an appliance for holding, tightening andremoving nuts, lug screws and the like and an object of the invention isto provide a wrench of simple and durable construction that is easy toadjust and convenient to use.

An object of the invention is to provide a wrench rigidly constructedwith jaws that are adjustable toward and from one another and providedwith faces that have recesses therein adapted to engage four sides ofvarious size nuts.

Another object of the invention is to provide a. wrench with awsadjustable toward or from one another by means of a revoluble hand gripso that the. wrench can be oper ated with one hand to free or engage anut.

A feature of the invention is shown in the construction of the aws whichare provided with oppositely arranged recesses and central channelsextending through the recesses that form very eii'ective grippingsurfaces.

A feature of the invention is shown in the novel construction,combination and arrangement of parts whereby the movable jaw is actuatedtoward a fixed jaw by rotation of a handle.

Other objects, advantages and features of invention may appear from theaccompanying drawing, the subjoined detail description. and the appendedclaim.

The accompanying drawing illustrates the invention.

Figure 1 is a broken sectional side view of a wrench constructed inaccordance with this invention and showing the fixed jaw detachablyconnected to the shank and showing the shank threaded through themovable jaw, and the movable jaw provided with guides to prevent itrotating on the shank when the handle is rotated.

Fig. 2 is a cross section on line 00 Fig. 1, with parts shown on aslightly reduced scale.

Fig. 3 is a section on line 00 Fig. 1, showing the fixed and movablejaws with a nut secured between them.

Fig. 4 is a cross section on line a2, Fig. 1.

The wrench 1 comprises a shank 2 to one Serial No. 606,360.

end of which is connected a fixed jaw 3, which is detachably connectedthereto.

The shank 2 is provided with a spindle 1 that is reduced in sizerelative to the shank so: as to form a shoulder 5 that abuts the innerface 6 of jaw 3 when the spindle 1 is extended through the opening 7 andsecured to the jaw 3 by any suitable means.

The handle 12 is secured to the end of shank 2 by a pin 16, and the end9 of the shank is preferably provided with a left hand thread and thisthreaded end passes through the threaded opening 17 in the jaw 13. Alsojaw 13 is provided with the openings 18 through which the guides 19extend.

The guides 19 have their ends 20 threaded through and secured to thefixed jaw 3 by opposing nuts 21, 22 and the inner face 6 of jaw 3 isrecessed to receive the nuts 22 which in fixed position are imbedded inthe jaw 3 and have their outer surfaces flush with the face 6.

The other ends 23 of guides 19 are threaded and extend through openingsin a plate 2a that is loosely mounted on the shank 2 and the ends 23 aresecured to the plate 2 1 by the opposing nuts 25, 26.

When the handle 12 is rotated in either direction it forces the movablejaw 13 toward or away from the fixed jaw 3.

By the foregoing construction a wrench is formed that is very rigid inuse; that is when the jaws 3, 13 are contacted with the sides of a nutthey are not displaced, or loosened by force applied to the shank 2 toturn the jaws on an axis but are held in firm contact with the nut theyengage. Also by the foregoing construction the jaws 3, 13 are alwaysheld in parallel planes, and the movable jaw 13 can be moved a great orinfinitesimal amount by rotation of the barn dle by which arrangementand movement the adjustable jaw as well as the fixed jaw can be fittedperfectly to a nut or bolt head having parallel sides.

The jaws 3, 13 are formed with hammer and tapered ends 27, 28respectively, and in the adjacent faces of the hammer and tapered endsare cross recesses 29 formed with two sides that are at right angles,and the recesses are arranged opposite one another, or so they willregister when the jaws are closed.

The recesses are arranged to receive the corners of a nut as shown inFig. 1, and as seen therein all four sides of the nut 30 are engaged bythe sides of the recesses and any of the numerous cross recesses can sobe employed.

In the tapered ends of the jaws 8, 13 are center recesses 31 that arearranged centrally in the adjacent faces of the jaws and intersect thecross recesses 29 at right angles; and the center recesses have twosides that are arranged at right angles to one another; and the purposeof these adjacent center re cesses is to grip a nut 32 that lies in aposition opposite to nut 31, or in a position that would be difficult toengage by the walls of the cross recesses 29.

The tapered ends 28 of the wrench are of considerable length so thatthey can be extended deep down in a recess to grip a nut.

In operation the handle 12 is manipulated to actuate the movable jaw 13toward or away from the fixed aw 3. \Vhen the jaws are fixed on a nut orlug screw either to seat or remove them, force is applied through theshank to rotate the jaws around an axis in a direction that willaccomplish the purpose.

In Fig. 1 the spindle at is journaled in the fixed jaw 3 and heldtherein by means of the nut 8 threaded on the spindle 4. The pin 8"prevents accidental displacement of the nut 4'.

I claim.

A rigid wrench comprising a shank provided with a left hand threadedportion; a spindle at one end of said shank provided with a threadedend; a fixed jaw mounted on said spindle; a nut threaded to the threadedend of said spindle to secure said jaw on said spindle; guides parallelwith said shanks and provided with threaded ends, nuts threaded on oneend of said guides, the inner face of said fixed jaw being provided withrecesses to receive the nuts threaded on said guides; other nutsthreaded on said guides securing said fixed guides to said fixed jaw; amovable jaw on the threaded portion of said shank and provided withopenings through which said guides extend; a plate loosely mounted onsaid shank and provided with openings to receive the other ends of saidguides; opposing nuts for securing said plate to said guides; a handleon said shank; and a pin adapted to secure said handle to said shank sothat when the handle is rotated in either direction the movable jaw willbe forced toward or away from the fixed jaw according to the directionthe handle is rotated.

In testimony whereof, I have hereunto set my hand at Los Angeles,California, this 1st day of December, 1922.

JOSEPH JIROY.

